Looks like a body kit to me. It just looks molded. Anyone can mold a wide body kit.
For clarification, these aren’t rolled fenders. You can buy fender flares for the 86 or get your fenders rolled. It is more expensive of course than riv-nutting the new over-fenders to the fenders.
The other option is replacement front fenders like Seibon’s 10mm wider front fender that replaces the whole front fender. There are also rivetless body kits.
